D.buildInArray({
  "username":/zjm\d{6}/,
  "password":/\d{8}/,
  "email":/[a-z0-9]{3,10}@[a-z]{3,9}(\.[a-z]{2,4}){1,2}/
},20);
D.getMainProperty(0);
D.getStringFrequency("email");
D.modifyRow("username",1,"zx123");
D.appendRow({"username":"zx","password":"123456","email":"zx@qq.com"});
D.preview(5);
D.removeDictor(0);
D.getDictorList();